*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Portions Copyright 2011 Martin Matuska
+ * Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
+ * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+ * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
*/
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/sdt.h>
#include <sys/fs/zfs.h>
+#include <sys/zfs_ctldir.h>
#include <sys/zfs_dir.h>
#include <sys/zfs_onexit.h>
#include <sys/zvol.h>
boolean_t *);
int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t **);
-/* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
-void
-__dprintf(const char *file, const char *func, int line, const char *fmt, ...)
-{
- const char *newfile;
- char buf[512];
- va_list adx;
-
- /*
- * Get rid of annoying "../common/" prefix to filename.
- */
- newfile = strrchr(file, '/');
- if (newfile != NULL) {
- newfile = newfile + 1; /* Get rid of leading / */
- } else {
- newfile = file;
- }
-
- va_start(adx, fmt);
- (void) vsnprintf(buf, sizeof (buf), fmt, adx);
- va_end(adx);
-
- /*
- * To get this data, use the zfs-dprintf probe as so:
- * dtrace -q -n 'zfs-dprintf \
- * /stringof(arg0) == "dbuf.c"/ \
- * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
- * arg0 = file name
- * arg1 = function name
- * arg2 = line number
- * arg3 = message
- */
- DTRACE_PROBE4(zfs__dprintf,
- char *, newfile, char *, func, int, line, char *, buf);
-}
-
static void
history_str_free(char *buf)
{
return (zfs_dozonecheck_impl(dataset, zoned, cr));
}
+/*
+ * If name ends in a '@', then require recursive permissions.
+ */
int
zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
{
int error;
+ boolean_t descendent = B_FALSE;
+ dsl_dataset_t *ds;
+ char *at;
+
+ at = strchr(name, '@');
+ if (at != NULL && at[1] == '\0') {
+ *at = '\0';
+ descendent = B_TRUE;
+ }
- error = zfs_dozonecheck(name, cr);
+ error = dsl_dataset_hold(name, FTAG, &ds);
+ if (at != NULL)
+ *at = '@';
+ if (error != 0)
+ return (error);
+
+ error = zfs_dozonecheck_ds(name, ds, cr);
if (error == 0) {
error = secpolicy_zfs(cr);
if (error)
- error = dsl_deleg_access(name, perm, cr);
+ error = dsl_deleg_access_impl(ds, descendent, perm, cr);
}
+
+ dsl_dataset_rele(ds, FTAG);
return (error);
}
if (error == 0) {
error = secpolicy_zfs(cr);
if (error)
- error = dsl_deleg_access_impl(ds, perm, cr);
+ error = dsl_deleg_access_impl(ds, B_FALSE, perm, cr);
}
return (error);
}
/*
* Destroying snapshots with delegated permissions requires
* descendent mount and destroy permissions.
- * Reassemble the full filesystem@snap name so dsl_deleg_access()
- * can do the correct permission check.
- *
- * Since this routine is used when doing a recursive destroy of snapshots
- * and destroying snapshots requires descendent permissions, a successfull
- * check of the top level snapshot applies to snapshots of all descendent
- * datasets as well.
- *
- * The target snapshot may not exist when doing a recursive destroy.
- * In this case fallback to permissions of the parent dataset.
*/
static int
-zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_destroy_recursive(zfs_cmd_t *zc, cred_t *cr)
{
int error;
char *dsname;
- dsname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value);
+ dsname = kmem_asprintf("%s@", zc->zc_name);
error = zfs_secpolicy_destroy_perms(dsname, cr);
if (error == ENOENT)
return (error);
}
+static int
+zfs_ioc_pool_reguid(zfs_cmd_t *zc)
+{
+ spa_t *spa;
+ int error;
+
+ error = spa_open(zc->zc_name, &spa, FTAG);
+ if (error == 0) {
+ error = spa_change_guid(spa);
+ spa_close(spa, FTAG);
+ }
+ return (error);
+}
+
static int
zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
{
* inconsistent. So this is a bit of a workaround...
* XXX reading with out owning
*/
- if (!zc->zc_objset_stats.dds_inconsistent) {
- if (dmu_objset_type(os) == DMU_OST_ZVOL)
- error = zvol_get_stats(os, nv);
+ if (!zc->zc_objset_stats.dds_inconsistent &&
+ dmu_objset_type(os) == DMU_OST_ZVOL) {
+ error = zvol_get_stats(os, nv);
+ if (error == EIO)
+ return (error);
+ VERIFY3S(error, ==, 0);
}
if (error == 0)
error = put_nvlist(zc, nv);
uint64_t cookie = 0;
int len = sizeof (zc->zc_name) - (p - zc->zc_name);
- while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0)
- (void) dmu_objset_prefetch(p, NULL);
+ while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0) {
+ if (!dataset_name_hidden(zc->zc_name))
+ (void) dmu_objset_prefetch(zc->zc_name, NULL);
+ }
}
do {
NULL, &zc->zc_cookie);
if (error == ENOENT)
error = ESRCH;
- } while (error == 0 && dataset_name_hidden(zc->zc_name) &&
- !(zc->zc_iflags & FKIOCTL));
+ } while (error == 0 && dataset_name_hidden(zc->zc_name));
dmu_objset_rele(os, FTAG);
/*
int error;
top:
- if (zc->zc_cookie == 0)
+ if (zc->zc_cookie == 0 && !zc->zc_simple)
(void) dmu_objset_find(zc->zc_name, dmu_objset_prefetch,
NULL, DS_FIND_SNAPSHOTS);
zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
NULL);
- if (error == 0) {
+ if (error == 0 && !zc->zc_simple) {
dsl_dataset_t *ds;
dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
if (nvpair_type(propval) !=
DATA_TYPE_UINT64_ARRAY)
err = EINVAL;
+ } else {
+ err = EINVAL;
}
} else if (err == 0) {
if (nvpair_type(propval) == DATA_TYPE_STRING) {
return (error);
}
-#ifdef HAVE_SNAPSHOT
-/*
- * Search the vfs list for a specified resource. Returns a pointer to it
- * or NULL if no suitable entry is found. The caller of this routine
- * is responsible for releasing the returned vfs pointer.
- */
-static vfs_t *
-zfs_get_vfs(const char *resource)
-{
- struct vfs *vfsp;
- struct vfs *vfs_found = NULL;
-
- vfs_list_read_lock();
- vfsp = rootvfs;
- do {
- if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
- mntget(vfsp);
- vfs_found = vfsp;
- break;
- }
- vfsp = vfsp->vfs_next;
- } while (vfsp != rootvfs);
- vfs_list_unlock();
- return (vfs_found);
-}
-#endif /* HAVE_SNAPSHOT */
-
/* ARGSUSED */
static void
zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
uint64_t sense = ZFS_PROP_UNDEFINED;
uint64_t norm = ZFS_PROP_UNDEFINED;
uint64_t u8 = ZFS_PROP_UNDEFINED;
+ int error;
ASSERT(zplprops != NULL);
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
- if (norm == ZFS_PROP_UNDEFINED)
- VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
+ if (norm == ZFS_PROP_UNDEFINED &&
+ (error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm)) != 0)
+ return (error);
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
*/
if (norm)
u8 = 1;
- if (u8 == ZFS_PROP_UNDEFINED)
- VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
+ if (u8 == ZFS_PROP_UNDEFINED &&
+ (error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8)) != 0)
+ return (error);
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
- if (sense == ZFS_PROP_UNDEFINED)
- VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
+ if (sense == ZFS_PROP_UNDEFINED &&
+ (error = zfs_get_zplprop(os, ZFS_PROP_CASE, &sense)) != 0)
+ return (error);
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
return (error);
}
+/*
+ * inputs:
+ * name dataset name, or when 'arg == NULL' the full snapshot name
+ * arg short snapshot name (i.e. part after the '@')
+ */
int
zfs_unmount_snap(const char *name, void *arg)
{
-#ifdef HAVE_SNAPSHOT
- vfs_t *vfsp = NULL;
+ zfs_sb_t *zsb = NULL;
+ char *dsname;
+ char *snapname;
+ char *fullname;
+ char *ptr;
+ int error;
if (arg) {
- char *snapname = arg;
- char *fullname = kmem_asprintf("%s@%s", name, snapname);
- vfsp = zfs_get_vfs(fullname);
- strfree(fullname);
- } else if (strchr(name, '@')) {
- vfsp = zfs_get_vfs(name);
+ dsname = strdup(name);
+ snapname = strdup(arg);
+ } else {
+ ptr = strchr(name, '@');
+ if (ptr) {
+ dsname = strdup(name);
+ dsname[ptr - name] = '\0';
+ snapname = strdup(ptr + 1);
+ } else {
+ return (0);
+ }
}
- if (vfsp) {
- /*
- * Always force the unmount for snapshots.
- */
- int flag = MS_FORCE;
- int err;
+ fullname = kmem_asprintf("%s@%s", dsname, snapname);
- if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) {
- mntput(vfsp);
- return (err);
- }
- mntput(vfsp);
- if ((err = dounmount(vfsp, flag, kcred)) != 0)
- return (err);
+ error = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
+ if (error == 0) {
+ error = zfsctl_unmount_snapshot(zsb, fullname, MNT_FORCE);
+ zfs_sb_rele(zsb, FTAG);
+
+ /* Allow ENOENT for consistency with upstream */
+ if (error == ENOENT)
+ error = 0;
}
-#endif /* HAVE_SNAPSHOT */
- return (0);
+
+ strfree(dsname);
+ strfree(snapname);
+ strfree(fullname);
+
+ return (error);
}
/*
* inputs:
- * zc_name name of filesystem
- * zc_value short name of snapshot
+ * zc_name name of filesystem, snaps must be under it
+ * zc_nvlist_src[_size] full names of snapshots to destroy
* zc_defer_destroy mark for deferred destroy
*
- * outputs: none
+ * outputs:
+ * zc_name on failure, name of failed snapshot
*/
static int
-zfs_ioc_destroy_snaps(zfs_cmd_t *zc)
+zfs_ioc_destroy_snaps_nvl(zfs_cmd_t *zc)
{
- int err;
+ int err, len;
+ nvlist_t *nvl;
+ nvpair_t *pair;
- if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
- return (EINVAL);
- err = dmu_objset_find(zc->zc_name,
- zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN);
- if (err)
+ if ((err = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+ zc->zc_iflags, &nvl)) != 0)
return (err);
- return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value,
- zc->zc_defer_destroy));
+
+ len = strlen(zc->zc_name);
+ for (pair = nvlist_next_nvpair(nvl, NULL); pair != NULL;
+ pair = nvlist_next_nvpair(nvl, pair)) {
+ const char *name = nvpair_name(pair);
+ /*
+ * The snap name must be underneath the zc_name. This ensures
+ * that our permission checks were legitimate.
+ */
+ if (strncmp(zc->zc_name, name, len) != 0 ||
+ (name[len] != '@' && name[len] != '/')) {
+ nvlist_free(nvl);
+ return (EINVAL);
+ }
+
+ (void) zfs_unmount_snap(name, NULL);
+ (void) zvol_remove_minor(name);
+ }
+
+ err = dmu_snapshots_destroy_nvl(nvl, zc->zc_defer_destroy,
+ zc->zc_name);
+ nvlist_free(nvl);
+ return (err);
}
/*
* zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
* zc_sendobj objsetid of snapshot to send
* zc_fromobj objsetid of incremental fromsnap (may be zero)
+ * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
+ * output size in zc_objset_type.
*
* outputs: none
*/
{
objset_t *fromsnap = NULL;
objset_t *tosnap;
- file_t *fp;
int error;
offset_t off;
dsl_dataset_t *ds;
dsl_dataset_t *dsfrom = NULL;
spa_t *spa;
dsl_pool_t *dp;
+ boolean_t estimate = (zc->zc_guid != 0);
error = spa_open(zc->zc_name, &spa, FTAG);
if (error)
spa_close(spa, FTAG);
}
- fp = getf(zc->zc_cookie);
- if (fp == NULL) {
- dsl_dataset_rele(ds, FTAG);
- if (dsfrom)
- dsl_dataset_rele(dsfrom, FTAG);
- return (EBADF);
- }
+ if (estimate) {
+ error = dmu_send_estimate(tosnap, fromsnap, zc->zc_obj,
+ &zc->zc_objset_type);
+ } else {
+ file_t *fp = getf(zc->zc_cookie);
+ if (fp == NULL) {
+ dsl_dataset_rele(ds, FTAG);
+ if (dsfrom)
+ dsl_dataset_rele(dsfrom, FTAG);
+ return (EBADF);
+ }
- off = fp->f_offset;
- error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off);
+ off = fp->f_offset;
+ error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj,
+ fp->f_vnode, &off);
- if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
- fp->f_offset = off;
- releasef(zc->zc_cookie);
+ if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
+ fp->f_offset = off;
+ releasef(zc->zc_cookie);
+ }
if (dsfrom)
dsl_dataset_rele(dsfrom, FTAG);
dsl_dataset_rele(ds, FTAG);
return (error);
}
+static int
+zfs_ioc_pool_reopen(zfs_cmd_t *zc)
+{
+ spa_t *spa;
+ int error;
+
+ error = spa_open(zc->zc_name, &spa, FTAG);
+ if (error)
+ return (error);
+
+ spa_vdev_state_enter(spa, SCL_NONE);
+ vdev_reopen(spa->spa_root_vdev);
+ (void) spa_vdev_state_exit(spa, NULL, 0);
+ spa_close(spa, FTAG);
+ return (0);
+}
/*
* inputs:
* zc_name name of filesystem
return 0;
}
+/*
+ * inputs:
+ * zc_name name of new filesystem or snapshot
+ * zc_value full name of old snapshot
+ *
+ * outputs:
+ * zc_cookie space in bytes
+ * zc_objset_type compressed space in bytes
+ * zc_perm_action uncompressed space in bytes
+ */
+static int
+zfs_ioc_space_written(zfs_cmd_t *zc)
+{
+ int error;
+ dsl_dataset_t *new, *old;
+
+ error = dsl_dataset_hold(zc->zc_name, FTAG, &new);
+ if (error != 0)
+ return (error);
+ error = dsl_dataset_hold(zc->zc_value, FTAG, &old);
+ if (error != 0) {
+ dsl_dataset_rele(new, FTAG);
+ return (error);
+ }
+
+ error = dsl_dataset_space_written(old, new, &zc->zc_cookie,
+ &zc->zc_objset_type, &zc->zc_perm_action);
+ dsl_dataset_rele(old, FTAG);
+ dsl_dataset_rele(new, FTAG);
+ return (error);
+}
+
+/*
+ * inputs:
+ * zc_name full name of last snapshot
+ * zc_value full name of first snapshot
+ *
+ * outputs:
+ * zc_cookie space in bytes
+ * zc_objset_type compressed space in bytes
+ * zc_perm_action uncompressed space in bytes
+ */
+static int
+zfs_ioc_space_snaps(zfs_cmd_t *zc)
+{
+ int error;
+ dsl_dataset_t *new, *old;
+
+ error = dsl_dataset_hold(zc->zc_name, FTAG, &new);
+ if (error != 0)
+ return (error);
+ error = dsl_dataset_hold(zc->zc_value, FTAG, &old);
+ if (error != 0) {
+ dsl_dataset_rele(new, FTAG);
+ return (error);
+ }
+
+ error = dsl_dataset_space_wouldfree(old, new, &zc->zc_cookie,
+ &zc->zc_objset_type, &zc->zc_perm_action);
+ dsl_dataset_rele(old, FTAG);
+ dsl_dataset_rele(new, FTAG);
+ return (error);
+}
+
/*
* pool create, destroy, and export don't log the history as part of
* zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
{ zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
- { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE,
+ { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_FALSE,
POOL_CHECK_NONE },
{ zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE,
POOL_CHECK_NONE },
POOL_CHECK_NONE },
{ zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
- { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, DATASET_NAME,
- B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
+ { zfs_ioc_destroy_snaps_nvl, zfs_secpolicy_destroy_recursive,
+ DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
{ zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
{ zfs_ioc_dsobj_to_dsname, zfs_secpolicy_diff, POOL_NAME, B_FALSE,
POOL_CHECK_NONE },
{ zfs_ioc_events_clear, zfs_secpolicy_config, NO_NAME, B_FALSE,
POOL_CHECK_NONE },
+ { zfs_ioc_pool_reguid, zfs_secpolicy_config, POOL_NAME, B_TRUE,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY },
+ { zfs_ioc_space_written, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
+ POOL_CHECK_SUSPENDED },
+ { zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME, B_FALSE,
+ POOL_CHECK_SUSPENDED },
+ { zfs_ioc_pool_reopen, zfs_secpolicy_config, POOL_NAME, B_TRUE,
+ POOL_CHECK_SUSPENDED },
};
int
tsd_create(&zfs_fsyncer_key, NULL);
tsd_create(&rrw_tsd_key, NULL);
- printk(KERN_NOTICE "ZFS: Loaded module v%s%s, "
+ printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
"ZFS pool version %s, ZFS filesystem version %s\n",
- ZFS_META_VERSION, ZFS_DEBUG_STR,
+ ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
SPA_VERSION_STRING, ZPL_VERSION_STRING);
return (0);
out1:
zfs_fini();
spa_fini();
- printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s%s"
- ", rc = %d\n", ZFS_META_VERSION, ZFS_DEBUG_STR, error);
+ printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
+ ", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
+ ZFS_DEBUG_STR, error);
return (error);
}
tsd_destroy(&zfs_fsyncer_key);
tsd_destroy(&rrw_tsd_key);
- printk(KERN_NOTICE "ZFS: Unloaded module v%s%s\n",
- ZFS_META_VERSION, ZFS_DEBUG_STR);
+ printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
+ ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
return (0);
}
projects / mirror_zfs.git / blobdiff